In the conflict between Jing-mei and her mother, Jing-mei is right to blow up on her mother about not wanting or trying to be a prodigy. For example, she talks about how wanted to and was even excited about being a prodigy, but her mother out of selfishness pushes her to hard towards that dream, plan, goal, etc. Whatever you want to call it. Therefore she decides not to want to be a prodigy anymore. Every time her mom tries to train her to be some type of prodigy she is bored with it and does not want to try it. One she is pushed to far by no other than her own mother. So she blows up on her because she's tired of it.